Door closer with oil collecting plate

By installing an oil collection plate and an embedded sensor alarm at the bottom of the door closer, the problem of oil leakage and pollution is solved, lubricating oil collection and timely alarm are realized, and the maintenance process is simplified.

CN223649080UActive Publication Date: 2025-12-09ZHEJIANG MUZI ELECTROMECHANICAL CO LTD
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Patent Information

Application Number
CN202520508203.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2025-12-09
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

Existing door closers are prone to oil leakage after long-term use, causing lubricating oil to contaminate the door panel and the ground. At the same time, there is a lack of effective oil leakage detection and alarm mechanisms.

Method used

An oil collection plate is installed at the bottom of the door closer, and an immersion sensor and alarm are embedded in the oil collection plate to detect oil leakage and alarm in time. At the same time, a sloping structure is designed to collect lubricating oil, and a sliding plate and pin structure facilitate the disassembly and assembly of the oil collection plate.

Benefits of technology

It effectively collects leaked lubricating oil, preventing contamination of the door panel and the ground, and provides timely alarms via sensors, simplifying the maintenance process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223649080U_ABST
    Figure CN223649080U_ABST
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Abstract

The utility model discloses a door closer with an oil collecting plate, which comprises a door closer body, the rear side of the door closer body is integrally provided with abutting plates which are distributed up and down and extend transversely, the rear side surfaces of the two abutting plates are coplanar, the lower side of the door closer body is provided with the oil collecting plate through a mounting assembly, and the oil collecting plate is provided with an oil outlet. An oil collecting plate is arranged at the bottom of the door closer, an oil collecting groove is formed in the upper side face of the oil collecting plate, an immersion liquid sensor is arranged in the oil collecting groove, and an alarm electrically connected to the immersion liquid sensor is installed in the oil collecting plate. Leaked lubricating oil directly permeates into a door plate or the ground; according to the utility model, the alarm and the immersion liquid sensor are arranged in the oil collecting plate, so that an alarm can be given out in time when the door closer body leaks oil; a worker only needs to press the pressing plate to disassemble and assemble the oil collecting plate in the oil collecting device, and maintenance or alarm elimination is facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of door closer technology, and in particular to a door closer with an oil collection plate. Background Technology

[0002] A door closer is a hydraulic or mechanical device installed on a door to control the closing speed, allowing the door to close smoothly and quietly without impacting the door frame. Its core working principle typically relies on a hydraulic system.

[0003] Door closers typically use sealing rings and gaskets to prevent oil leakage. However, after prolonged use, the rubber seals may lose elasticity due to aging, wear, or high-temperature deformation, causing oil to seep out from the gaps. Oil leakage can lead to door closer failure, manifesting as uncontrolled closing speed, inability to maintain the open position, or noise. In addition, leaked lubricating oil can contaminate the door panel and make the floor dirty. Currently, most door closers on the market do not have features to eliminate the effects of oil leakage, so improvements are needed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a door closer with an oil collection plate to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a door closer with an oil collection plate, including a door closer body, wherein the rear side of the door closer body is integrally formed with vertically distributed and horizontally extended abutment plates, the rear sides of the two abutment plates are coplanar, and the door closer body is also provided with a plurality of mounting holes distributed at equal distances on the left and right, the mounting holes being arranged in two rows on the top and bottom.

[0006] An oil collection plate is mounted on the lower side of the door closer body via an installation assembly. An oil collection groove is provided on the upper side of the oil collection plate, and an immersion sensor is installed in the oil collection groove. An alarm electrically connected to the immersion sensor is installed in the oil collection plate.

[0007] Preferably, the gear shaft inside the door closer body extends to the lower side of the door closer body, and the lower side of the oil collecting plate is provided with a frustum, and the oil collecting trough is provided with a deep groove at the frustum, and the immersion sensor is installed in the deep groove.

[0008] Preferably, the mounting assembly includes a sliding plate, a vertical plate is provided on the side of the sliding plate, and a laterally extending pin is provided at the end of the vertical plate; a pressure plate is provided at one end of the sliding plate, and a spring is provided at the other end of the sliding plate.

[0009] Two sliding plates are provided, and they are slidably connected to the front and rear sides of the oil collection tank respectively. The two sliding plates are symmetrically distributed front and back and arranged in opposite directions left and right, so that the two pressure plates are respectively located on the left and right sides of the oil collection plate.

[0010] The lower side of the door closer body is integrally formed with a vertical plate, and the vertical plate is provided with two slots distributed front and back for accommodating the latch.

[0011] Preferably, each of the slide plates is provided with three vertical plates arranged in a left-right arrangement and the pin, and there are also three vertical plates.

[0012] Preferably, the upright plate is provided with a liquid-passing groove that runs through the left and right sides, and the liquid-passing groove is located between the front and rear slots.

[0013] Preferably, the side of the oil collection groove and the upper side of the door closer body are chamfered to form an inclined surface, and the upper edge of the inclined surface extends to the front, rear, left and right sides of the door closer body, and the rear side of the oil collection plate is located in front of the rear side of the abutment plate.

[0014] Preferably, a boss for supporting the spring is provided at the corner of the oil collection groove near the spring.

[0015] This utility model provides a door closer with an oil collection plate, which has the following advantages:

[0016] This utility model has an oil collection plate at the bottom of the door closer to prevent the leaked lubricating oil from directly seeping into the door panel or the ground after the door closer has been used for a long time and leaks.

[0017] This utility model has an alarm and a liquid immersion sensor installed in the oil collection plate, which can promptly issue an alarm when oil leakage occurs in the door closer body.

[0018] Staff can easily disassemble and assemble the oil collection plate in this utility model by simply pressing the pressure plate, which facilitates maintenance or alarm elimination. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the interior of the CIMC oil pan;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a top view of the oil collecting plate of this utility model.

[0023] In the picture:

[0024] 11. Body; 12. Abutment plate; 13. Mounting hole; 14. Oil collection plate; 15. Oil collection trough; 16. Immersion sensor; 17. Frustum; 18. Slide plate; 19. Vertical plate; 20. Pin; 21. Pressure plate; 22. Spring; 23. Vertical plate; 24. Liquid passage trough. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Reference Figures 1-4According to an embodiment of the present invention, a door closer with an oil collection plate includes a door closer body 11. The rear side of the door closer body 11 is integrally formed with vertically distributed and laterally extended abutment plates 12, the rear sides of the two abutment plates 12 are coplanar. The door closer body 11 is also provided with a plurality of mounting holes 13 distributed at equal intervals on the left and right sides. The mounting holes 13 are arranged in two rows, one above the other. During installation, the worker needs to press the door closer body 11 onto the door panel and make the two abutment plates 12 adhere to the door panel. Then the worker passes the bolts through the mounting holes 13 and screws them onto the door panel to complete the installation of the door closer body 11.

[0030] In addition, an oil collection plate 14 is mounted on the lower side of the door closer body 11 via an installation assembly. An oil collection trough 15 is provided on the upper side of the oil collection plate 14, and an immersion sensor 16 is provided in the oil collection trough 15. An alarm is installed in the oil collection plate 14 that is electrically connected to the immersion sensor 16.

[0031] When the lubricating oil in the door closer body 11 leaks, the leaked lubricating oil will accumulate in the oil collection tank 15. When the immersion sensor 16 detects the lubricating oil, it will trigger an alarm through the alarm device.

[0032] It should be noted that the immersion sensor, the alarm, and the electrical connection between them are supported by mature existing technologies, which will not be elaborated here. Furthermore, the lubricating oil in the door closer body 11 contains conductive additives, or the lubricating oil is a conductive lubricating oil, so that it can trigger the water immersion sensor 16.

[0033] Furthermore, the gear shaft inside the door closer body 11 extends to the lower side of the door closer body 11, and a frustum 17 is provided on the lower side of the oil collecting plate 14. The oil collecting trough 15 has a deep groove at the frustum 17, and the immersion sensor 16 is installed in the deep groove. With this arrangement, if oil seepage occurs, the oil will collect in the deep groove and trigger the immersion sensor 16. It is not necessary for the oil to cover the entire bottom surface of the oil collecting trough 15, thus reducing the amount of oil seepage required for alarm and improving detection accuracy.

[0034] The mounting assembly includes a slide plate 18, a vertical plate 19 is provided on the side of the slide plate 18, and a laterally extending pin 20 is provided at the end of the vertical plate 19. A pressure plate 21 is provided at one end of the slide plate 18, and a spring 22 is provided at the other end of the slide plate 18. In this embodiment, a boss for supporting the spring 22 is provided at the corner of the oil collection groove 15 near the spring 22, so as to reduce the length of the slide plate 18 and the material used for the spring 22.

[0035] Two sliding plates 18 are provided, and are slidably connected to the front and rear sides of the oil collection tank 15 respectively. The two sliding plates 18 are symmetrically distributed front and back and arranged in opposite directions left and right, so that the two pressure plates 21 are respectively located on the left and right sides of the oil collection plate 14.

[0036] The lower side of the door closer body 11 is integrally formed with a vertical plate 23, and the vertical plate 23 is provided with two slots distributed front and back for accommodating the pin 20.

[0037] In addition, to improve stability, each of the slide plates 18 is provided with three vertical plates 19 arranged on the left and right and the pins 20, and the upright plates 23 are also provided with three.

[0038] When the oil collection plate 14 needs to be removed, the operator presses the two pressure plates 21 inward to make the two sliding plates 18 move towards each other and compress the spring 22. At this time, the pin 20 will move laterally. After the pin 20 leaves the slot, the oil collection plate 14 can be disengaged from the door closer body 11, so that the operator can replace the battery in the liquid immersion sensor 16 or clear the alarm.

[0039] When the oil collecting plate 14 is installed on the door closer body 11, the lower side of the upright plate 23 will abut against the bottom surface of the oil collecting groove 15. In order to prevent the upright plate 23 from blocking the flow of lubricating oil into the deep groove, a liquid passing groove 24 that runs through the left and right is also provided in the upright plate 23. The liquid passing groove 24 is located between the front and rear slots.

[0040] In order to ensure that the lubricating oil seeping from any possible oil leakage points inside the door closer body 11 can enter the oil collection groove 15, the side of the oil collection groove 15 is chamfered with the upper side of the door closer body 11 to form a slope, and the upper edge of the slope extends to the front, rear, left and right sides of the door closer body 11. The rear side of the oil collection plate 14 is located in front of the rear side of the abutment plate 12 to avoid interference between the oil collection plate 14 and the door panel after the door closer with the oil collection plate is installed.

[0041] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A door closer with an oil collection plate, comprising a door closer body (11), characterized in that: The rear side of the door closer body (11) is integrally formed with abutment plates (12) that are distributed vertically and extend horizontally. The rear sides of the two abutment plates (12) are coplanar. The door closer body (11) is also provided with a plurality of mounting holes (13) that are distributed equidistantly on the left and right. The mounting holes (13) are arranged in two rows, one above the other. The lower side of the door closer body (11) is equipped with an oil collection plate (14) by means of an installation assembly. The upper side of the oil collection plate (14) is provided with an oil collection groove (15), and an immersion sensor (16) is provided in the oil collection groove (15). An alarm is installed in the oil collection plate (14) that is electrically connected to the immersion sensor (16).

2. A door closer with an oil collection plate according to claim 1, characterized in that: The gear shaft inside the door closer body (11) extends to the lower side of the door closer body (11), and a frustum (17) is provided on the lower side of the oil collecting plate (14), and a deep groove is provided in the oil collecting tank (15) at the frustum (17), and the immersion sensor (16) is installed in the deep groove.

3. A door closer with an oil collection plate according to claim 1, characterized in that: The mounting assembly includes a slide plate (18), a vertical plate (19) is provided on the side of the slide plate (18), and a laterally extending pin (20) is provided at the end of the vertical plate (19). A pressure plate (21) is provided at one end of the slide plate (18), and a spring (22) is provided at the other end of the slide plate (18). Two slide plates (18) are provided and are slidably connected to the front and rear sides of the oil collection tank (15) respectively. The two slide plates (18) are symmetrically distributed front and back and arranged in opposite directions to the left and right, so that the two pressure plates (21) are located on the left and right sides of the oil collection plate (14) respectively. The lower side of the door closer body (11) is integrally formed with a vertical plate (23), and the vertical plate (23) is provided with two slots distributed in the front and back for accommodating the pin (20).

4. A door closer with an oil collection plate according to claim 3, characterized in that: Each of the slide plates (18) is provided with three vertical plates (19) arranged on the left and right sides and the pins (20), and there are also three upright plates (23).

5. A door closer with an oil collection plate according to claim 3, characterized in that: The upright plate (23) is provided with a liquid passage (24) that runs through the left and right sides, and the liquid passage (24) is located between the front and rear slots.

6. A door closer with an oil collection plate according to claim 1, characterized in that: The side of the oil collection trough (15) is beveled at an angle to the upper side of the door closer body (11) to form an inclined surface, and the upper edge of the inclined surface extends to the front, rear, left and right sides of the door closer body (11). The rear side of the oil collection plate (14) is located in front of the rear side of the abutment plate (12).

7. A door closer with an oil collection plate according to claim 3, characterized in that: A boss for supporting the spring (22) is provided at the corner of the oil collection groove (15) near the spring (22).